模板方法模式

// package template 模板模式。
package template
import "fmt"
// AskForLeaveRequest 请假单接口
type AskForLeaveRequest interface {
	GetName() string
	ReasonForLeave() string
	HowManyDaysForLeave() float32
}
// Company 公司
type Company struct {
	// AskForLeaveRequest 组合AskForLeaveRequest接口对象
	AskForLeaveRequest
}
// AskLeave 请假
func (company Company) AskLeave() {
	fmt.Println(fmt.Sprintf("%s 因为 %s，请假 %.1f 天",
		company.GetName(), company.ReasonForLeave(), company.HowManyDaysForLeave()))
}
// MyAskForLeaveRequest 我的请假单，实现AskForLeaveRequest接口
type MyAskForLeaveRequest struct {
}
// GetName 请假人姓名
func (request MyAskForLeaveRequest)GetName() string {
	return "kaysun"
}
// ReasonForLeave 请假事由
func (request MyAskForLeaveRequest)ReasonForLeave() string {
	return "给娃打疫苗"
}
// HowManyDaysForLeave 请假多少天
func (request MyAskForLeaveRequest)HowManyDaysForLeave() float32 {
	return 0.5
}
// MyAskForLeaveRequest 我的请假单，实现AskForLeaveRequest接口
type TomAskForLeaveRequest struct {
}
// GetName 请假人姓名
func (request TomAskForLeaveRequest)GetName() string {
	return "tom"
}
// ReasonForLeave 请假事由
func (request TomAskForLeaveRequest)ReasonForLeave() string {
	return "回家探亲"
}
// HowManyDaysForLeave 请假多少天
func (request TomAskForLeaveRequest)HowManyDaysForLeave() float32 {
	return 5
}

package template
import (
	"testing"
)
func Test(t *testing.T) {
	t.Run("template: my", MyAskForLeaveTemplate)
	t.Run("template: tom", TomAskForLeaveTemplate)
}
func MyAskForLeaveTemplate(t *testing.T) {
	request := &MyAskForLeaveRequest{}
	company := Company{request}
	company.AskLeave()
}
func TomAskForLeaveTemplate(t *testing.T) {
	request := &TomAskForLeaveRequest{}
	company := Company{request}
	company.AskLeave()
}

kaysun 因为 给娃打疫苗，请假 0.5 天
tom 因为 回家探亲，请假 5.0 天